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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.example.android.apis.app;
     17 
     18 import android.app.Activity;
     19 import android.graphics.drawable.Drawable;
     20 import android.os.Bundle;
     21 import android.view.Menu;
     22 import android.view.MenuInflater;
     23 import android.view.MenuItem;
     24 import android.widget.SearchView;
     25 import android.widget.SearchView.OnQueryTextListener;
     26 import android.widget.TextView;
     27 import android.widget.Toast;
     28 
     29 import com.example.android.apis.R;
     30 
     31 /**
     32  * This demonstrates idiomatic usage of the Action Bar. The default Honeycomb theme
     33  * includes the action bar by default and a menu resource is used to populate the
     34  * menu data itself. If you'd like to see how these things work under the hood, see
     35  * ActionBarMechanics.
     36  */
     37 public class ActionBarUsage extends Activity implements OnQueryTextListener {
     38     TextView mSearchText;
     39     int mSortMode = -1;
     40 
     41     @Override
     42     protected void onCreate(Bundle savedInstanceState) {
     43         super.onCreate(savedInstanceState);
     44         mSearchText = new TextView(this);
     45         setContentView(mSearchText);
     46     }
     47 
     48     @Override
     49     public boolean onCreateOptionsMenu(Menu menu) {
     50         MenuInflater inflater = getMenuInflater();
     51         inflater.inflate(R.menu.actions, menu);
     52         SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
     53         searchView.setOnQueryTextListener(this);
     54         return true;
     55     }
     56 
     57     @Override
     58     public boolean onPrepareOptionsMenu(Menu menu) {
     59         if (mSortMode != -1) {
     60             Drawable icon = menu.findItem(mSortMode).getIcon();
     61             menu.findItem(R.id.action_sort).setIcon(icon);
     62         }
     63         return super.onPrepareOptionsMenu(menu);
     64     }
     65 
     66     @Override
     67     public boolean onOptionsItemSelected(MenuItem item) {
     68         Toast.makeText(this, "Selected Item: " + item.getTitle(), Toast.LENGTH_SHORT).show();
     69         return true;
     70     }
     71 
     72     // This method is specified as an onClick handler in the menu xml and will
     73     // take precedence over the Activity's onOptionsItemSelected method.
     74     // See res/menu/actions.xml for more info.
     75     public void onSort(MenuItem item) {
     76         mSortMode = item.getItemId();
     77         // Request a call to onPrepareOptionsMenu so we can change the sort icon
     78         invalidateOptionsMenu();
     79     }
     80 
     81     // The following callbacks are called for the SearchView.OnQueryChangeListener
     82     // For more about using SearchView, see src/.../view/SearchView1.java and SearchView2.java
     83     public boolean onQueryTextChange(String newText) {
     84         newText = newText.isEmpty() ? "" : "Query so far: " + newText;
     85         mSearchText.setText(newText);
     86         return true;
     87     }
     88 
     89     public boolean onQueryTextSubmit(String query) {
     90         Toast.makeText(this, "Searching for: " + query + "...", Toast.LENGTH_SHORT).show();
     91         return true;
     92     }
     93 }
     94